Socket for incandescent-electric-lamp holders.



7 A. GO'U RIUI SOCKET FOR INCA NDESGENT ELECTRIC LAMP HOLDERS.

APPLICATION FILED OCT- 23, I9I8.

Patented May 6, 1919 FIG, 2 FIQGJI FIG 5 UNITED STATES PATENT OFFICE.

ALEXANDRE GouFJU; 0F LYON, FRANCE, ASSIGNOR To ALFRED LECOMTE, 0F LYON,

FRANCE. i

SOCKET FOR INCANDESCENTELECTRIC LAMP HOLDERS.

To all whom it may concern: 1

Be it known thatI, ALEXANDER Go RJU, mechanic, of Lyon, France, a citizen ofthe French Republic, have invented certain new and useful Improvements in Socketsfor IncandescentElectric LampHolders, of which the following is aspecification.

This invention has for. its object a socket with circuit-breaker for incandescent electric lamp holders, the characteristic feature of which is that it has no screwed, riveted or pinned member, nor any sCI'eW, nut, rivet or washer. All the metalparts comprised in it can be cut withoutanyloss or waste from sheet metal, thus dispensing with any turning, trimming, sawing, boring, screw-cutting, worming or molding work.

It is easily understood that such method of manufacture is eminently economical and allows of production .atconsiderably lower prices than that of similar holders which now exist.

A form of construction of. the invention is illustrated by which i Figures 1 to 9 are detail views of the various parts which compose the socket.

Fig. 10 is a vertical section of the socket mounted in the lamp holder.

The socket comprises A L i the accompanying drawing in 1. A truncated cone-shaped memberra ofu orcelain or any other insulatingmaterial. This member is shown in front view by Fig. 1 and Figs. 2 and 3 are sections taken on the lines 22 and 33 respectively of Fig. l. The member a is provided with a transverse hole 6. In planes perpendicular to this hole it has a longitudinal groove 0 which extends from the top of the member to a cavity (Z which crosses the hole 6; below this hollow is a small recess e situated in the extension of the groove 0; on the opposite side of the member a is a groove f reaching from the cavity 03 to the bottom of the member a and communicating by a groove 9 with a circular bore h.

Parallel with the groove 0 or on the 0pposite side, is another groove '5 extending from the top to the bottom of the member a and communicating by means of a small groove j with a circular bore is similar to h and arranged beside the latter.

Finally, at the upper part of the member a are two transverse openings Z and m,

Specification of Letters Patent. Patented May 6, 1919, 3 Application filed October 2a, 1918. ,Serial ne5a4125 i 3. A strip .0 bent into the shape shown in Fig.6. The part c engages in the opening Z of the member a and serves. to maintain one of the line wires p (see Fig. 10) the part 0 is placed in the groove 0 and the curved part 0 encircles the upper part of the pushpin m- A strip g (Fig. 7). of which the part q incloses the lower part of the push-pin and is bentover at q in order to fit into the recess e, while the part 9 lies in the grooves f and g and is formed at 9* into a split cylinder which is inserted in the bore it.

. 5. A strip a (Fig. 8) of which the bent over part 1 engages into the opening m and serves to fix the second lineqvire s; the part r of this strip lies. in the grooves 71 and y' and at r is formed into a split cylinder housed in the bore 70.

.6. Two hollow contact pins formed by a strip 2? hammered into the shape shown in Fig. -9,so asto serve as areceptacle for a :spring a (Fig. 10).

The whole device, mounted as explained, is placed in themetal plug casing 'v and is retained therein by the push-pin m which passes through both walls of this casing, and projects on each side of the latter.

It is easily understood that the split cylinder r inserted in the bore is is in permanent contact, by means of the strip 1", with one of the poles of the line, while the contact be tween the part 9 situated in the bore h and the other pole only takes place when the metal ring a of the push-pinis between the strips 0 and g, the lighting and extinguishing of the lamp being thus obtained by the displacement of the push-pin in one or the other direction.

It can be seen that the metal parts of the socket are easily manufactured without loss and with the minimum working possible.

011 the other hand mounting is efi'ected without the assistance of any tool and the shape and arrangement of the members secure a satisfactory working.

What I claim as my invention and desire to secure by Letters Patent of the United States is p p 1. A socket for incandescent electric lamp 5 holders comprising in combination a block of insulating material having a centralcavity lateral and transverse channels and tWo cylindrical apertures in its base, contact pins inserted in said cylindrical apertures and held therein by frictieii, bent members formed of sheet metal and held in said lateral and transverse channels by friction, said members serving to fix the line Wires and to establish contact between said wires, and said contact pins, and a laterally movable switch pin eoacting with said'bent members to makeand break ontact. I

2. A holder for incandescent electric lamps comprising a metal casing, a porcelain block.

inserted in said casing said block having a central cavity lateral-and transverse channels and two cylindrical apertures in its base, cont-act pins inserted in said cylindrica'l apertures and held therein by friction,

bent members formed of sheet metal and member having a transverse bore, a longitudinal groove extending from the top of the memberto a central cavity thereof, a second longitudinal groove extending from said cavity to the bottom of said member and connected by a transverse groove with a circular bore in the base of said member, a third longitudinal groove extending from the top of said member to the bottom thereof and communicating by a transverse groove with a second cylindrical bore in the base of said member and two transverse openings adjacent the top of said member, a laterally movable sv'vitch pinmounted in said transverse bore, a metal ring around said pin, a rectangularly bent strip ofmetal, one end oi: which is engaged in one of said transverse openings and serves to maintain one of the line Wires in place therein and the other end lies in said cavity and partly surrounds the said switch pin, a second rectangularly bent strip of metal one arm of which partly surrounds the said switch pin and the other end of which engages in one of said circular bores in the base of said member, a third rectangularly bent strip of metal, one end of which is engaged in the other of said before mentioned transverse openings and serves to fix the second line wire in place said last mentioned strip being engaged in the other of said circular" bores in the base of said member, a slidabl'e hollow Contact pin mounted in each of said circular bores in connection with said second and third strips respectively and springs in said contact pins, the said metal strips being held in position in said cone shaped member by friction.

In Witness whereof I have signed this specification in the presence of two Witnesses.

ALEXANDRE GOUR-JU. Witnesses J' GEii-M'AEN, GRAD Comma.

Coplei of this patent may be obtained for five cents each, by addressing the commissioner er Patents. Washington-,D. 0. 

